Apparatus for setting up alpha vibratory air column



Jan. 8, 1929. F. c. WAPPLER APPARATUS FOR SETTING UP A VIBRATORY AIR COLUMN Filed Dec, 24

Patented Jan. 8, 1929.

FREDERICK C. VVAPPLER, OF NEVI YORK, N. Y., AFlSIGNOR TO COMPBEX OSCILLATOR rarer CORPOI KJATION, OF NEW' YOEK, N.'Y., A GOBl OR-ATION OF NEW YORK.

arrana'rusron Saarinen]? a viBnAronY Ara corona.

Application filed December 4, 1924. Serial No. 753,779.-

The invention relates to an air compressing device which, although capable of other uses, is particularly adapted for medical p urposes, for example, what is known as a penetrating massage wherein the effect is desired of a vibratory column of air. Motor driven pumps for such purposes have been produced in which the pump was connected to the motor through some form of speed reducing mecha-.

nism such as belts, gears, etc, butthe rate of air impulses so obtained could not exceed about two thousand per minute as a practical matter, and furthermore such devices necessarily involve cumbersome and expensive mountings to keep the parts in proper relation to each other, and counteractthe detrimental effects of vibrations.

According to the present invention I employ an air pump which is direct connected to a small high speed motor, and preferably mounted directly thereon, making up a unitary and much more compact structure which preferably is flexibly supported from a suitable standard to avoid the detrimental effects of vibrations and which is capable of practical operation at much higher speeds than heretofore. y

The aboveand other objects and advantages of the invention will be in part obvious and in part specifically pointed out in the description hereinafter contained, which, taken in connection with the accompanying drawings, discloses a preferred embodiment of theinvention; such embodiment, however, is to be considered as merely illustrative of its principies. In the drawings:

Fig. 1 is an end view of an air compressing device constructed in accordance with the invention, the air pump thereof being shown in section.

Fig. 2 is a side view of the structure show in Fi .1 with the air nnn also aoiearins' in section.

Fig. 3 a central sectional view showing detached a valve whichmay be employed in connection with the aircompressing device.

Fig. 4 is a plan view of the air pump shown in Figs. 1 and 2, and the adjacent end of the motor housing.

The illustrated type of air pump consists of a cylinder or casing 1, within which reciprocates a piston 2 having a connecting rod 3 associated therewith. As shown, the impulses of the pump are delivered through an opening 4 (Fig. 1) in the cylinder head, into which opening tapered plug 5 carrying a delivery tube 6 may be inserted when the effect is desired of a vibratory columnof air. The pump is preferably provided with suitable fins 7 for air-cooling purposes.

To drive the pump I employ an electric motor 8 having a spindle 9 suitably journaled within themotor housing 10, and, as above stated, according to one feature of the intention the air pump is direct connected to the motor so as to be driven therefrom without the interposition of speed-reducing gearing or the like.

As shown, the pump casing 1. is located at.

one end of the motor housing 10, and is sub stantially radial to spindle 9. The casing 1 is also rigidly connected to and supported from the housing 10, this being accomplished in the present instance by providing flanges 11 on the casing which are disposed laterally of the motor hub 12, and are detachably secured to the motor housing 10 byscrews 13. As shown, the projecting end of spindle 9 is pro videdwith a collar 14 having a. crank pin 15 thereon engaging the connecting rod 3, to directly connect the piston of the pumpwith the motor. i

The pump and motor therefore are assembled intoa unitary structure which is exceedingly compact, and furthermore is substantially rigid as regards vibrations. It is here/fore possible to operate the pump at much higher speed than heretofore, the latter working satisfactorily with the motor running at from five thousand to eight thousand P. M., as contrasted to a previously maxi-M mum allowable speed in the neighborhood of 7 two thousand strokes per minute. i

In the present embodiment of the invention the pump casing 1 1s extended down to "enclose the protruding end of spindle 9 andassociated parts, thereby providing a casing parts in this position the pump structure may 7 he slid into its proper position and the screws 13 tightened up. A washer 17 (Fig. 2) may also be interposed bet-seen collar 1% and hub I ed to delivery tubes and respectively co 1 to provide a tight joint for the interior or such casing.

In the present rorm of the invention the plug 16 provides an oil reservoir 181 01 lubricating the parts of the pump. It is not necessary that the level of the oil be as high as the connecting rod 3 in most instances, since owing to the vibrations of the device at high speecs the oil Will be distributed to all parts of the casing. A suitable oil hole 19 is provided in the casing 1.

I prefer to construct the air pump in such manner that it may be readily adjusted to produce either a viorating column of air,

Willbe obtained by the structure shown Fig. 1, or pressure or vacuum impulses. As is shown in 3, a valve member '20 may be employed havin a hollow plug 21 similar to the member previously described, and leading to a pair of air passages which contain oppositely-acting check valves. As shown,

the valve member is T-shaped, and provided With arms '22 and 23 adapted to be connect-- ulning the check valves above referred to, the

check valves bein illustrated as havins' valve seats 24 Within which valve members 25 are slidably mounted. The valve members 25 are provided with beads a6 adapted to seat against the members 2% to close the valves, and with stops 2? at their opposite ends to limit the distance members 25 may move in opening. Thus, as the valve appears in Fig. 3, vacuum or suction impulses only are permitted to pass through the arm 22 in the di rection of the arrow, While pressure impulses only may pass through arm 23. Thus, by connecting a tube selectively to the arms 22 and 23,'tl1e en'ect of vacuum or pressure impulses may be obtained as desired. 7

I also prefer to support theair compressing device above mentioned so as to cushion the effect of vibrations thereon. in the present instance the unitary structure consisting of a motor and pi'i'mp, is yieldably supported from a standard having a base 28 and an upright 29 of inverted ll shape, by means of the springs 30 1). ltdesired, the base 28 may also be utilized to conta in a speed-controlling device tor the motor, a dial 31 being shown for this purpose in the present era-- bodiment, and a flexible cable 32 extends bemany cha tween the motor and the base to provide current leads to the motor. Y

l Jhile a specific embodiment of the invention has been described, it Will be obvious that es maybe made therein Without departing irom its principles, as defined in the appended claiins. 1

I claim 1. An a paratu for s tting up a vibratory air column, con'iprising a motor and housing therefor, a cylinder fixed with regard to the motor housing, a piston reciprocating Within said cylinder and direct connected to the spi die or" said motor, said cylinder having a ivery opening communicating with. the cylinder space during both strokes of the piston to set up a vibratory air column, said cylinder closed against air admission delivery except through said above mentioned opening. I

An apparatus for setting up a vibratory the spindle of motor, said cylinder having a delivery opening communicating With the cylinder paceduring both strokesoi the pisto to set up a vibratoryair column a supporting standard, said motor. and pump structure being resiliently supported from e'd standard to permit such structure'to vite in response to the impulses set up by the piston.

8. An apparatus for setting up a vibratory air column, comprising a motor and housing therefor, a pump cylinder fixedly connected to the motor housing, a piston reciprocating Within said. cylinder and direct connected to the spindle of suit motor, said cylinder having a delivery opening communicating 'With the cylinder space during both strokes of the piston to set up a vibratory air column and a supporting standard comprising a memher and an upright mounted thereon, said motor and pump structure being resiliently sus pended from said upright to permit said structure to vibrate n response to the impulses set up by the on. v

In testimony that r claim the foregoing,

T have hereunto set my hand this 21st day of November, 192%.

r column, comprising motor and housing fixedly connected- 

